The iPhone Wiki is no longer updated. Visit this article on The Apple Wiki for current information.

ASLR

From The iPhone Wiki
Revision as of 22:03, 18 January 2012 by Http (talk | contribs) (→‎dyld_shared_cache: presumably a formatting typo)
Jump to: navigation, search

Address Space Layout Randomization

First added

  • with iOS 4.3

Program and dyld

  • On program load, the address space offset of the program is randomized between 0x0 and 0x100000
  • It always falls on a 0x1000 page boundary
  • dyld is included in this sliding section

dyld_shared_cache

  • The system libraries are now stored in a big cache file, see [1]
  • This is address randomized at boot time, in many possible places
  • The functions retain a fixed offset to each other.
Retrieved from "https://www.theiphonewiki.com/w/index.php?title=ASLR&oldid=23980"